Security update for LibVNCServer

Announcement ID:	SUSE-SU-2018:0830-1
Rating:	important
References:	bsc#1017711 bsc#1017712 bsc#1081493
Cross-References:	CVE-2016-9941 CVE-2016-9942 CVE-2018-7225
CVSS scores:	CVE-2016-9941 ( NVD ): 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2016-9942 ( NVD ): 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2018-7225 ( SUSE ): 7.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H CVE-2018-7225 ( NVD ): 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise Desktop 12 SP2 SUSE Linux Enterprise Desktop 12 SP3 SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2 SUSE Linux Enterprise Software Development Kit 12 12-SP2 SUSE Linux Enterprise Software Development Kit 12 SP3

An update that solves three vulnerabilities can now be installed.

Description:

LibVNCServer was updated to fix two security issues.

These security issues were fixed:

• CVE-2018-7225: Missing input sanitization inside rfbserver.c rfbProcessClientNormalMessage() (bsc#1081493).
• CVE-2016-9942: Heap-based buffer overflow in ultra.c allowed remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions (bsc#1017712).
• CVE-2016-9941: Heap-based buffer overflow in rfbproto.c allowed remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area (bsc#1017711).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2
  zypper in -t patch SUSE-SLE-RPI-12-SP2-2018-554=1
• SUSE Linux Enterprise Software Development Kit 12 12-SP2
  zypper in -t patch SUSE-SLE-SDK-12-SP2-2018-554=1
• SUSE Linux Enterprise Software Development Kit 12 SP3
  zypper in -t patch SUSE-SLE-SDK-12-SP3-2018-554=1
• SUSE Linux Enterprise High Performance Computing 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-554=1
• SUSE Linux Enterprise Server 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-554=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-554=1
• SUSE Linux Enterprise Server 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-554=1
• SUSE Linux Enterprise High Performance Computing 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-554=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2018-554=1

Package List:

• SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2 (aarch64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise Software Development Kit 12 12-SP2 (aarch64 ppc64le s390x x86_64)
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • LibVNCServer-devel-0.9.9-17.5.1
• SUSE Linux Enterprise Software Development Kit 12 SP3 (aarch64 ppc64le s390x x86_64)
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • LibVNCServer-devel-0.9.9-17.5.1
• SUSE Linux Enterprise High Performance Computing 12 SP2 (aarch64 x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise Server 12 SP2 (aarch64 ppc64le s390x x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise Server 12 SP3 (aarch64 ppc64le s390x x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise High Performance Computing 12 SP3 (aarch64 x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3 (ppc64le x86_64)
  • libvncserver0-debuginfo-0.9.9-17.5.1
  • libvncserver0-0.9.9-17.5.1
  • LibVNCServer-debugsource-0.9.9-17.5.1
  • libvncclient0-debuginfo-0.9.9-17.5.1
  • libvncclient0-0.9.9-17.5.1

References:

• https://www.suse.com/security/cve/CVE-2016-9941.html
• https://www.suse.com/security/cve/CVE-2016-9942.html
• https://www.suse.com/security/cve/CVE-2018-7225.html
• https://bugzilla.suse.com/show_bug.cgi?id=1017711
• https://bugzilla.suse.com/show_bug.cgi?id=1017712
• https://bugzilla.suse.com/show_bug.cgi?id=1081493